Equalizing drive for grinding machines



June 19, 1928.

. 1,674,457 A. P..$TEINER EQUALIZING DRIVE FOR GKINDING MACHINES Filed May 19', 1925 2 Sheets-Sheet 1 I I I AmosPSteZner? June'l9 1928 I Q a A. P. STEINER EQUALIZING DRIVE FOR GRINDING MACHINES 2 Sheets-Sheet v 2 Filed Ma,

INVENTOR.

Steiner:

Patented June 19, 1928. V

UNITED STATES,

1,674,457 PATENT ()FFICE;

AMDS r. sTErNnR, or WAYNESBORO, rnNNsYLvaNr assIe o no LANDIS TOOL COM- PANY, or WAYNESBORO, PE NSYL ANIA, a; CORPORATION or riiNNsYLvANIA.

EQUALIZING DRIVE FOB GRINDING MACHTNES.

Application filed May "19,, 1925. Serial No. 31,407.

My said invention relates to an equalizing drive forroll grinding machines and it is an object thereof to provide means for driving a roll uniformly regardless of whether the roll and the headstock are in or out of alinement. The drive is intended for revolving heavy rolls such as are used in steel mills which rolls are usually provided with rough cast indents at the projecting ends of their journals, theseindents being known as wabbler connections. Heavy rolls for finishing must be ground while journaled infthei'r own bearings. In order to obtain the proper surface on the roll it is necessary to provide for adjustment up and down or sidewise, or both. Such adjustment takes the roll out of line with the headstock and the equalizing drive must compensate for the want .of alinement.

Such rolls must be ground to a very accurate and highly polished surface and therefore'must be revolved with-a uniform motion during the grinding operation. It is necessary also, that the. power be applied equally on each side of the roll so as to avoid any tendency to rock the roll or change its relative position on its bearings.

The principal object of this invention is to provide means whereby a roll with rough or uneven driving connections may be driven from the face plate on the headstock of a grinding machine with a uniform power action at opposite sides of the roll regardless of any unevenness, want of alinement or eccentric relation existing between the roll and its driver, it being understood that the axis of the roll remains parallel or very nearly parallel to that of the headstock.

Referring to the accompanying drawings which are made a part hereof and on which similar reference characters indicate similar parts:

Figure 1 is a front elevation showing a roll and its driver in operating position in a grinding machine,

Figure 2, a section of the equalizing driver on line 2-2 of Fig. 3,

Figure 3, an end elevation of said equalizer viewed from the right in Figure 2,

Figure 4:, a section through the floating In the drawings reference character 10 inlinks, 28 and 29, each pivoted at one end to plate connection on line 4-4 of Fig. 3, and

dicates a table of any suitable character or roll heads 12', said headstock revolving and the roll heads supporting the roll 13 while being ground by the grinding Wheel 14 all in a manner well known to those familiar withthe art of grinding rolls. 2

The equalizing driver is attached to the face plate 15 and comprises a floating disc or plate 16 and a driving plate 17, said plate 17 having T slots 18 in which driving dogs 19 are radially adjustable, the dogs serving to engage the slots 20 in the roll 13 for driving the roll. The number of T slots and dogs may be varied to correspond to the number ofv slots in the roll, The driving dogs 19 being sl'idably mounted on the plate 17 are adjustable for rolls of different sizes andth ey are secured in adjusted position by clamping bolts 21, the heads of said bolts engaging the T slots 18.

The driving plate 17 is driven by two links 22 and 23', each pivoted at. one end to I ing plate 16 by one of the two pins 26 and 27 each extending through and projecting from opposite faces of disk 16.

'The'floating plate 16 is driven by two the plate 16 by one of the two pins 26 and 27, and each pivoted at the other end to the face plate 15 by one of the two studs 30 and 31.

The floating plate 16 is free to move in I 28 and 29, i. e., up or down, and the driving plate is free to move in either direction at right angles to the links 22 and 23 i. e., to right or left, there-by allowing the driving plate 17 to move in any direction outside of its true center to adjust itself to any want of alignment and still drive with equal power against both the driving dogs, 19.

Bolts 32 pass through enlarged clearance holes in the plates 16 and 17 and screw into the face plate 15. A large washer 33 under the head of each bolt covers the clearance holes in the plate 17 restricting the longitudinal or axial movement of the plate, but permitting it to move freely laterally or transversely of itself. The purpose of these bolts is to relieve side strain on the links 22, 23, 28 and 29, and prevent any considerable angular change of relation between the headstock and the roll.

It will be obvious to those skilled in the art that various changes may be made in my device without departing from the spirit of the invention and therefore I do not limit myself to what is shown in the drawings and described in the specification but only as indicated in the appended claims.

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a roll grinding machine, an equalizing driving element comprising a face plate on the driving element, a second plate on the driven element, a floating plate between the two said plates, a pair of pins arranged on a diameter of the floating plate at opposite sides of its axis, each of said pins projecting at opposite sides of the floating disk, a pair of pins on each of the other plates located at opposite sides of their axes on diameters at right angles to the first-named diameter, and sets of parallel links between the opposed faces of said plates, said links being connected at opposite ends to the respective a adjacent plates, substantially as set forth.

2. .An equalizing device comprising a face plate adapted to be attached to a driving element, a second plate adapted to be attached to a driven element, a floating plate between the two said plates, a pair of pins arranged on a diameter of the floating plate at opposite sides of its axis, each of said pins projecting at opposite sides of the floating disks, a pair of pins on each of the other plates located at opposite sides of their axis at diameters at right angles to the firstnamed diameter, sets of parallel links be tween opposed faces of said plates, said links being connected at opposite ends to the respective adjacent plates, and means to prevent relative angular movement of the driving element and the driven element, substantially as set forth.

3. An equalizing device comprising a face plate on a driving element, a second plate adapted to be attached to a driven element, a floating plate between the two said plates, a pair of pins projecting through the floating plate at intervals of 180, pins on the face plate 90 from those on the floating plate, parallel links connecting said pairs of pins, pins on the second plate 90 from those on thefloating plate, and links normally at rightangles to those first-named connecting those of the floating plate to those of the second plate, substantially as set forth.

4t. An equalizing device as in claim 3 with screw bolts extending through registering clearance holes in said driving plate and said floating plate into threaded holes in said face plate to maintain said float in parallelism, substantially as set forth. v

In witness whereof, I have hereunto set my hand at lVaynesboro, Pennsylvania, this 18th day of May, A. D. nineteen hundred and twenty-five.

AMOS P. STEINER. 

